hadrosaur
noun
had·ro·saur
ˈha-drə-ˌsȯr 
: any of a genus (Hadrosaurus) or family (Hadrosauridae) of mainly bipedal dinosaurs of the Late Cretaceous that have the forward part of the jaws toothless and flattened into a beak-like snout and the back part of the jaws filled with rows of numerous small, grinding teeth and that often have a solid or hollow bony crest on the skull : duck-billed dinosaur
… the hadrosaurs evolved into some 21 different species during their 20 million-year stint on earth …—
Virginia Morell
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Edmontosaurs were probably pretty striking to look at with a long, low skull and one of the most prominent duck-bill snouts of any hadrosaur.
—Andrew Paul, Popular Science, 23 Oct. 2025
The fossils show that the hadrosaur likely grew to be more than 35 feet long and weighed as much as 9 tons, according to the release.
—Irene Wright, Miami Herald, 9 Oct. 2025
To find an answer, Brown turned to hadrosaurs such as Corythosaurus, plant-eaters from about 70 million years ago.
—Rupendra Brahambhatt, Interesting Engineering, 14 Sep. 2025
And while bonebeds with ankylosaurs, hadrosaurs, and sauropods have hinted at herd behavior, so, too, have deposited dino tracks, suggesting some dinosaurs had a distinct social streak.
—Sam Walters, Discover Magazine, 28 Mar. 2024
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Andrew Paul, Popular Science, 23 Oct. 2025
The fossils show that the hadrosaur likely grew to be more than 35 feet long and weighed as much as 9 tons, according to the release.
—Irene Wright, Miami Herald, 9 Oct. 2025
To find an answer, Brown turned to hadrosaurs such as Corythosaurus, plant-eaters from about 70 million years ago.
—Rupendra Brahambhatt, Interesting Engineering, 14 Sep. 2025
And while bonebeds with ankylosaurs, hadrosaurs, and sauropods have hinted at herd behavior, so, too, have deposited dino tracks, suggesting some dinosaurs had a distinct social streak.
—Sam Walters, Discover Magazine, 28 Mar. 2024
See All Example Sentences for hadrosaur
Cite this Entry
“Hadrosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hadrosaur. Accessed 31 Oct. 2025.
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